Japan is the only country with oil firms in all three of Abu Dhabi’s key upstream concessions. Inpex this week extended its contract for two offshore fields, and snared a larger stake at one of these, Umm Al Dalkh.

Japanese state-backed oil firm Inpex announced on 16 January that it has agreed on an extension to its contract to jointly develop the Satah and Umm Al Dalkh fields offshore Abu Dhabi. The contract was due to expire on 8 March 2018, but will now run until 31 December 2042....